Genetic Variant AP4S1:p.Met7Ile (chr14-31066217-G-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001128126.3(AP4S1):c.21G>A(p.Met7Ile) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,676 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

AP4S1
NM_001128126.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.45

Publications

0 publications found

Variant links:

Genes affected

AP4S1 (HGNC:575): (adaptor related protein complex 4 subunit sigma 1) This gene encodes a member of the adaptor complexes small subunit protein family. These proteins are components of the heterotetrameric adaptor protein complexes, which play important roles in the secretory and endocytic pathways by mediating vesicle formation and sorting of integral membrane proteins. The encoded protein is the small subunit of adaptor protein complex-4, which is associated with both clathrin- and nonclathrin-coated vesicles. Mutations in this gene are associated with spastic quadriplegic cerebral palsy-6. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene, and a pseudogene of this gene is located on the long arm of chromosome 6. [provided by RefSeq, Dec 2011]

AP4S1 Gene-Disease associations (from GenCC):

AP-4 deficiency syndrome
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
hereditary spastic paraplegia 52
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
AP4-related intellectual disability and spastic paraplegia
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

AP4S1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AP4S1	NM_001128126.3 link	c.21G>A	p.Met7Ile	missense_variant	Exon 2 of 6	ENST00000542754.7	NP_001121598.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AP4S1	ENST00000542754.7 link	c.21G>A	p.Met7Ile	missense_variant	Exon 2 of 6	1	NM_001128126.3	ENSP00000438170.2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461676

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727136

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33470

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39648

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53412

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5760

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111902

Other (OTH)

AF:

0.00

AC:

AN:

60384

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 20, 2015

Genetic Services Laboratory, University of Chicago

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.69

BayesDel_addAF

Uncertain

0.019

BayesDel_noAF

Benign

-0.21

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.0

.;T;T;.;T;.;.;T;.;.;T

Eigen

Benign

0.066

Eigen_PC

Uncertain

0.31

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.95

D;.;.;D;D;D;.;D;D;.;D

M_CAP

Benign

0.0025

MetaRNN

Benign

0.26

T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

.;N;N;N;.;N;N;.;N;.;N

PhyloP100

6.5

PrimateAI

Pathogenic

0.81

PROVEAN

Benign

-2.1

N;.;N;N;N;N;N;N;N;D;.

REVEL

Benign

0.18

Sift

Benign

0.21

T;.;T;T;T;T;T;T;T;.;.

Sift4G

Benign

0.60

T;T;T;T;T;T;T;T;T;.;T

Vest4

0.0

ClinPred

0.61

GERP RS

6.0

PromoterAI

-0.010

Neutral

(source)

Varity_R

0.35

gMVP

0.41

Mutation Taster

=70/30

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.33

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.33

Position offset: 2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over